A kind of pure bromobutyl rubber inner liner and its mixing method and application
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A technology of bromobutyl rubber and airtight layer, which is applied in the field of rubber mixing, can solve problems such as carbon black agglomeration, achieve good airtightness, avoid abnormal damage, and be easy to promote
Active Publication Date: 2021-05-07
TONGLI TIRE CO LTD
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Problems solved by technology
[0006] In order to be able to well solve the technological problem that carbon black agglomeration is easily produced when mixing with a shear-type full-square rotor, the present invention designs a mixing method, which is better than the existing mixing method using a full-square rotor. The rubber mixing is more stable, the carbon black is more evenly dispersed, and there is no carbon black agglomeration, and the carbon black dispersion is higher and the air tightness is better than that produced by the ZZ2 rotor
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Embodiment 1
[0050] HF Group GK420 Internal Mixer is used for the first stage of masterbatch, the rotor is a shear type full square rotor, and the upper bolt pressure is 50N / cm 2 , mixing room, rotor temperature 40 ℃, put bromobutyl rubber, homogenizer 40MSF, stearic acid, magnesium oxide into the internal mixer at the same time, put all the carbon black, speed 27 rpm, press the top bolt To 90°C, lift the top bolt, add environmental protection oil, rotate at 37 rpm, press the top bolt to 130°C, lift the top bolt, rotate at 20 rpm, press the top bolt to 138°C to remove glue, use a screw The extruder is unloaded, and after cooling, it is parked for 6-8 hours for final rubber mixing. The final rubber mixing adopts HF Group GK255 type internal mixer, the rotor is ZZ2 rotor, and the pressure of the top bolt is 45N / cm 2 , the temperature of the mixing room and the rotor is 40°C, put the masterbatch, zinc oxide, MBTS, and sulfur into the internal mixer at a speed of 20 rpm, press the top bolt fo...
Embodiment 2
[0052] HF Group GK420 Internal Mixer is used for the first stage of masterbatch, the rotor is a shear type full square rotor, and the upper bolt pressure is 50N / cm 2 , mixing room, rotor temperature 40 ℃, put bromobutyl rubber, homogenizer 40MSF, stearic acid, magnesium oxide into the internal mixer at the same time, put all the carbon black, rotate at 30 rpm, press the top bolt To 95°C, lift the top bolt, add environmental protection oil, rotate at 33 rpm, press the top bolt to 125°C, lift the top bolt, rotate at 25 rpm, press the top bolt to 138°C to remove glue, use a screw The extruder is unloaded, and after cooling, it is parked for 6-8 hours for final rubber mixing. The final rubber mixing adopts HF Group GK255 type internal mixer, the rotor is ZZ2 rotor, and the pressure of the top bolt is 45N / cm 2 , the temperature of the mixing room and the rotor is 40°C, put the masterbatch, zinc oxide, MBTS, and sulfur into the internal mixer at a speed of 20 rpm, press the top bol...
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Abstract
The invention relates to a pure bromobutyl rubber airtight layer and its mixing method and application, belonging to the field of rubber mixing, including: adding rubber, compounding agent, and carbon black to the mixing device, and performing the mixing at a low speed I Crushing; when the temperature reaches 90-95°C, add process oil and mix at high speed; when the temperature reaches 125-130°C, disperse and mix at low speed II; when the temperature reaches 135-140°C, deglue, Cooling and standing still to obtain a master batch; mixing the master batch with a vulcanizing agent and an accelerator, and performing final rubber mixing to obtain a final rubber batch. The method of the present invention can well solve the technical problem that carbon black agglomeration is easily produced when mixing with a shear-type full-square rotor, and is more stable than the mixed rubber produced by using a full-square rotor in the existing mixing method, and the carbon black The dispersion is more uniform, and there is no carbon black agglomeration, and the carbon black dispersion of the rubber compound produced by using the ZZ2 rotor is higher and the air tightness is better.
Description
technical field [0001] The invention belongs to the field of rubber mixing, in particular to a mixing method of pure bromobutyl rubber inner liner. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Butyl rubber has the advantages of good airtightness, flexibility, weather resistance and chemical stability, making butyl rubber and its main derivative halogenated butyl rubber the most suitable material for maintaining the airtightness of automobile tires. Bromobutyl rubber has higher activity and compound viscosity than chlorinated butyl rubber. Pure bromobutyl rubber has better airtightness, which can reduce airtightness while ensuring airtightness. The thickness of the lay...
Claims
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Application Information
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